초록 ▼

A process wherein a particulate sorbent mass of zeolite which has been ion-exchanged with zinc or cadmium to provide pore size openings of about 5A, and greater, particularly zinc, is contacted with a moist hydrocarbon process stream which contains sulfur, sulfur compounds, and other contaminants, t

A process wherein a particulate sorbent mass of zeolite which has been ion-exchanged with zinc or cadmium to provide pore size openings of about 5A, and greater, particularly zinc, is contacted with a moist hydrocarbon process stream which contains sulfur, sulfur compounds, and other contaminants, these being adsorbed onto said particulate sorbent mass, and the process stream thereby denuded of said sulfur, sulfur compounds, and other contaminants. Thereafter, the sulfur, sulfur compounds, and other contaminants, are readily desorbed, or removed from said particulate sorbent mass by contacting, and purging same with a gas stream, suitably hydrogen, or a hydrogen-containing gas, at elevated temperature.

대표청구항 ▼

A process for the removal of sulfur from a moisture-bearing, sulfur containing hydrocarbon process stream which comprises contacting said stream with a particulate mass of zeolite sufficiently ion-exchanged with cadmium to provide pore size openings of about 5 A, and greater, to adsorb sulfur thereo

A process for the removal of sulfur from a moisture-bearing, sulfur containing hydrocarbon process stream which comprises contacting said stream with a particulate mass of zeolite sufficiently ion-exchanged with cadmium to provide pore size openings of about 5 A, and greater, to adsorb sulfur thereon, and after completion of the sulfur sorption cycle, contacting said ion-exchanged zeolite with an essentially non-reactive gas or reducing gas at elevated temperature, the sulfur being desorbed and the sorbent thereby regenerated. A process for the removal of sulfur from a moisture-bearing, sulfur containing process stream wherein a series of on-stream reactors are provided with beds of a sulfur sensitive platinum-containing catalyst, a naphtha feed with hydrogen is cocurrently passed sequentially through said series of reactors, and a vaporous effluent rich in hydrogen is taken from the last reactor of the series, hydrogen is separated from the products and recycled, the improvement which comprises contacting said stream with a particulate mass of zeolite sufficiently ion-exchanged with cadmium to provide pore size openings of about 5 A, and greater, to adsorb sulfur thereon, and after completion of the sulfur sorption cycle, contacting said ion-exchanged zeolite with an essentially non-reactive gas or reducing gas at elevated temperature, the sulfur being desorbed and the sorbent thereby regenerated.